. >> reporter: but after benghazi, the u.s. ambassador to libya asass natd, three more americans murdered, with egypt run by islamists, syria out of control, mitt romney campaigning in colorado blamed barack obama. >> these are not bumps in the road, these are human lives. these are developments we do not want to see. this is time for a president who will shape events in the middle east. >> reporter: in our presidential election, romney is trailing in colorado and in ohio, a must-win state for him where he campaigns tomorrow. >> and look, we're going to win. no question in my mind we're going to win. >> reporter: six weeks to go. one reason president obama is limiting diplomatic time at the u.n. and his united nations speech tomorrow will be mostly aimed at american voters. i'm steve handelsman, news4. >>> in a related development, iran's president also in new york to address the u.n. today he called for the elimination of israel. president mahmoud ahmadinejad made that statement to reporters. the national security council said